Ratings: Which of 11 Finales Delivered the Biggest Bang?

Thursday's ratings rundown: 8 pm/ETSurvivor topped the hour with an audience of 12 million total viewers, on par with last week. Bones' surreal season-ender scored 8.7 mil, up a tick. Ugly Betty dropped 9 percent to claim third with 6.83 mil. While NBC's Earl (4.8 mil) wrapped up its season with a 370K gain, Parks & Recreation (4.25 mil) concluded its freshman run with another (8 percent) drop. Smallville saw 3.16 mil (down 180 thou) pull up a chair for the [cough] "epic" clash. 9 pmGrey's Anatomy's two-hour, two-jaw-dropper season finale drew 16.35 million viewers — marking the serial's largest audience since the Sept. 25 opener and a week-to-week gain of a mil. CSI's finale followed with 14.42 mil. Trailing the Hell's Kitchen closer (7.4 mil), NBC's The Office welcomed 6.72 mil to the company picnic (down 13 percent), while 30 Rock (5.66 mil) dropped 8 percent. Supernatural's Dean and Sam had 2.9 mil (up 100K) at their side as they braved an apocalyptic finale 10 pmPlacing second behind Grey's, CSI: NY's wacky little Thursday season-ender copped 12.84 mil, up 600 thou from its Wednesday outing. Facing outrageously stiff competition, NBC's Southland plummeted 29 percent, to 4.64 mil.Crave scoop on your favorite TV shows? E-mail senior editors Matt, Mickey and Tim at megascoop@tvguide.com. Also, follow TV Guide on Twitter.